查询词典 aromatic compounds

The second part is about that five-membered rings compounds were synthesised using aromatic aldehyde,α-bromoketone and imine ester in the present of zinc power.

2以芳香醛，α-溴代苯乙酮与氨基酸酯亚胺类化合物在金属锌粉的作用下，生成一系列的四氢吡咯化合物。

The result indicates that those four resuscitation-inducing aromatic herbs mainly contain volatile oil ,and all contain alicyclic compounds; the volatile oil of Borneolum Syntheticum and Styrax both contain Sesquiterpenes of caryophyllene; as resin herbs , Styrax and Benzoinum both contain vanillin, resin ester and balsamic acid .

结果表明，四味芳香开窍药主含挥发油，均含有脂环化合物，并存在一些共有成分，如龙脑冰片与苏合香挥发油中均含有倍半萜类成分石竹烯；苏合香和安息香皆为树脂类中药，两者均含有香荚兰醛成分，尚含树脂酯，香脂酸等。中国论文联盟http：//www.lwlm.com

Aromatic rings can be joined at a pair of adjacent carbons to yield compounds such as naphthalene, anthracene and chrysene

芳环能在一对相邻碳上结合，生成萘、葸和？傅然油母质中的芳香烃结构含有被苯环共振键稳定的自由电子。

Aromatic rings can be joined at a pair of adjacent carbons to yield compounds such as naphthalene, anthracene and chrysene

芳环能在一对相邻碳上结合，生成萘、葸和？傅然

Aromatic rings can be joined at a pair of adjacent carbons to yield compounds such as naphthalene, anthracene and chrysene

芳环能在一对相邻碳上结合，生成萘、葸和？傅然增加凝聚剂用量会增大最后处理的污泥量。

Aromatic rings can be joined at a pair of adjacent carbons to yield compounds such as naphthalene, anthracene and chrysene

芳环能在一对相邻碳上结合，生成萘、葸和？傅然一头母牛每天产几加仑的牛奶。

After surface modification, Pt and Pd can be supported on the surface of CNTs. These novel catalysts were successfully used in the selective hydrogenation of cinnamaldehyde and halogenated aromatic nitro compounds.

经过表面修饰后，可以在纳米碳管表面均匀负载上Pt和Pd；分别把它们应用于肉桂醛和卤代硝基化合物的选择性加氢，取得较好的结果。

Knoevenagel condensation reaction of aromatic aldehydes with active methylene compounds like ethyl cyanoacetate proceeds smoothly in water in the presence of 8mol% of diammonium hydrogen phosphate and 2mol% TEBA.

醛与活泼亚甲基化合物的 Knoevenagel 反应是有机合成中广泛应用的形成碳碳键的重要方法，该反应一般是弱碱性催化剂存在下完成的，如各类胺、脲[1]等，Lerwis酸[2]、杂多酸[3]、氨基酸[4]等也可用于催化该反应。

The complexation behavior of these compounds with linear or aromatic dicarboxylate was investigated by the means of absorption, emission spectra,〓H-NMR and molecular dynamics.

结果显示，二羧酸盐阴离子与双链萘基脲／硫脲哌嗪化合物发生络合形成新的物种导致双链萘基脲／硫脲哌嗪化合物的吸收和荧光光谱行为的变化。

Other aromatic compounds such as toluene, diphenylmethane and 1,1,2-triphenylethane were also deuterated smoothly in C6D6 within 24 h at room temperature.

其它的芳香族化合物如甲苯、二苯甲烷和1，1，2－三苯乙烷与氘代苯在室温下24小时也顺利地发生氢氘交换反应。

Aquatic or marsh-growing fern allies; known to have existed since the Cenozoic; sometimes included in Lycopodiales.

生活于水中或湿地的蕨类；从新生代生存至今；有时归于石松目之中。

The engine was uprated from a 90hp Franklin to a 125hp Lycoming.

改良过的引擎是从90hp到125hp莱康明富兰克林。